Asus PRIME B840M-A-CSM (90MB1J10-M0EAYC)

Name: Asus PRIME B840M-A-CSM 90MB1J10-M0EAYC
Brand: Asus

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Asus PRIME B840M-A-CSM

2025 Prime-CSM (business)M.2 cooling no backlight 2.5 Gbps

Towards:home / office

Form Factor:micro-ATX

Socket:AM5

Chipset:AMD B840

BIOS:Ami

RAM slots:DDR5 4 sl

RAM form factor:DIMM

RAM clock:7600 MHz

Sound (channels):7.1

Connectors:HDMI, M.2

Additional connectors:DisplayPort

Power connector:24-pin

Processor power:8-pin

CSM is a model for corporate users. Customers of CSM products receive the ASUS Control Centre administration software.

All specifications

Specifications PRIME B840M-A-CSM

Main
Features	for home/office
Socket	AM5
Form factor	micro-ATX
Power phases	11 / 8+2+1 /
VRM heatsink
Size (HxW)	244x244 mm


Chipset
Chipset	AMD B840
BIOS	Ami
UEFI BIOS


RAM
DDR5	4 slot(s)
Memory module	DIMM
Operation mode	2 channel
Max. clock frequency	7600 MHz
Max. memory	192 GB
EXPO support


Drive interface
SATA 3 (6Gbps)	4
M.2 connector	3
M.2	3xPCIe 4x
M.2 version	2x4.0, 1x3.0
M.2 SSD cooling
Integrated RAID controller


Expansion slots
PCIe 16x slots	3 pcs
PCIe modes	16x/1x/1x
PCIe support	4.0
Steel PCIe connectors

Internal connections
TPM connector
USB-A 2.0	2 pcs
USB-A 5Gbps	1 pcs
USB-C 5Gbps	1 pcs
ARGB LED strip	3


Video outputs
HDMI output
HDMI version	v2.1
DisplayPort	/ x2 /
DisplayPort version	v.1.4


Integrated audio
Audiochip	Realtek
Sound (channels)	7.1


Network interfaces
LAN (RJ-45)	2.5 Gbps
LAN ports	1
LAN controller	Realtek


External connections
USB-A 2.0	4 pcs
USB-A 10Gbps	2 pcs
USB-C 5Gbps	1 pcs
BIOS FlashBack


Power connectors
Main power socket	24-pin
CPU power	8-pin
Fan power connectors	6
CPU Fan 4-pin	2
CPU/Water Pump Fan 4-pin	1
Chassis/Water Pump Fan 4-pin	3


Official Website	asus.com
Added to E-Catalog	January 2025
P/N	90MB1J10-M0EAYC

E-Catalog UK editor, Motherboards

Valerii Lenko, edited 10.11.2025

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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	Asus 90MB1J10-M0EAYC ASUS Prime motherboards are expertly designed to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B... more840M-A-CSM motherboard offers users and DIY PC builders a variety of performance optimizations through intuitive software and firmware features. It's designed to be ready for advanced AI PCs, delivering the power and connectivity needed for demanding AI applications.Features:ASUS Corporate Stable Model (CSM):- ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. It offers up to 36 months of product lifecycle support and a 6-month notice at end of life to allow sufficient preparation times for your organization's product transitions. ASUS Control Center Express, server-grade IT management software, is included with every ASUS CSM motherboard purchase.ASUS Control Center Express:- ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with complete control and easy-to-use features. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.Optimizing IT Endpoint Management:- Designed to help IT staff monitor and control devices within their corporate networks, and facilitate inventory verification across multiple locations remotely.IT maintenance automation:- Enables IT staff to schedule automatic updates of the latest BIOS, software, and utilities to specific devices or all devices during off-peak times, improving system stability and IT operational flexibility.Secure management of all endpoints:- Securely manages endpoint configuration, mobile storage access, and PC software applications, allowing you to create grouping rules on individual devices.AI Advisor:- ASUS AI Advisor allows users to explore the advanced features and functionality of ASUS motherboards in a simple and straightforward way.Digital Power Design:- The PRIME B840M-A-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors, as well as consistent performance for everyday use.Improved DDR5 performance:- Comprehensive memory tuning options are the foundation of PRIME motherboards. The PRIME B840M-A-CSM maximizes the potential of your DDR5 modules, from entry-level modules to extreme speed kits.- For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for improved performance.- For those looking to exceed standard DDR5 speeds, the PRIME B840M-A-CSM offers broad support for AMD Extended Overclocking Profiles (EXPO™) and a wide variety of UEFI settings for further performance tweaking.Three M.2 slots (up to 64Gbps):- The PRIME B840M-A-CSM offers a total of three M.2 slots, two of which support data transfer speeds of up to 64Gbps via PCIe 4.0, and Tradeinn.com Delivery: in United Kingdom Report	£114.49 Buy in shop

	ASUS PRIME B840M-A-CSM micro ATX AM5 Motherboard 90MB1J10-M0EAYC Designed to provide businesses and first-time builders with stable and reliable performance, the ASUS PRIME B840M-A WIFI-CSM... moreMotherboard may be outfitted to drive immersive entertainment and high-quality content creation. With support for AMD Ryzen 7000, 8000, and 9000 series desktop processors with the AM5 socket, this M-ATX motherboard fits compact cases while delivering smooth performance for demanding applications and AI workloads. Install an M.2 PCIe 4.0 alongside a 3.0 SSD and four SATA III drives, providing you with plenty of space to store your applications and multimedia files. The four DDR5 DIMM slots support up to 192GB of 7600 MT/s overclocked memory. You can install a powerful graphics cards into the two PCIe 4.0 x16 slots while reserving the two PCIe 3.0 x16 (x1 mode) slots for other compatible expansions. The rear panel features two 10 Gb/s compatible USB-A ports alongside a USB-C 3.2 Gen 1 ports that work with 5 Gb/s devices. You can use the four USB-A 2.0 ports for keyboards, mice, and other peripherals. Built-in Wi-Fi 6E (802.11ax) support and a 2.5 Gb/s Ethernet port provide you with fast connections to compatible network devices for smooth video streaming and low-latency online games. Use the HDMI 2.1 and two DisplayPort 1.4 ports work with CPUs with integrated graphics. Windows 10 or later is required to take advantage of all this motherboard's features. Performance AI Ready Designed for the future of AI computing, this motherboard is equipped with the power and connectivity needed for demanding AI applications. ASUS AEMP ASUS Enhanced Memory Profile (AEMP) is an advanced firmware feature that empowers users to achieve cutting-edge overclocked memory performance. Comprehensive Cooling An enlarged VRM heat sink array works with the smart fan and AIO pump headers to efficiently dissipate heat for optimal performance. Realtek 7.1 Surround Sound The Realtek codec delivers high-quality 24-Bit / 192 kHz audio with shielded ports, premium capacitors, and dedicated PCB layers. DIY Friendly Q Technologies ASUS Q-Dashboard, Q-DIMM, Q-LED Core, and Q-slot features, along with a pre-mounted I/O shield, help to simplify installation. ASUS WiFi Q-Antenna Dual transceivers support the 2.4, 5, and 6 GHz bands to enable faster throughput, with directional sensitivity to improve signal quality and cover greater distances. You can also pair wireless Bluetooth peripherals such as speakers, headsets, keyboards, and mice with the wireless system. BIOS FlashBack Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack port, and press a button. No CPU or memory needed. Personalization ASUS GlideX Using this app enables smooth screen sharing and control across PCs, tablets, and smartphones via wired or wireless connections, across multiple platforms. ASUS DriverHub Simplify driver Box.co.uk Delivery: to United Kingdom Report	£129.98 Buy in shop

	Asus PRIME B840M-A AMD Ryzen AM5 DDR5 Micro ATX Motherboard - 90MB1J10-M0EAYC 90MB1J10-M0EAYC Awd-it.co.uk Delivery: to United Kingdom Report	£129.99 Buy in shop

	ASUS PRIME B840M-A CSM AMD B840 mATX motherboard, DDR5, PCIe 4.0 Ready, 3xM.2 slots, 2.5Gb Ethernet, DisplayPort, HDMI, rear Amazon.co.uk Delivery: in United Kingdom Report	£134.99 Buy in shop

	ASUS PRIME B840M-A-CSM AMD B840 Socket AM5 micro ATX ASUS PRIME B840M-A-CSM AMD B840 Socket AM5 micro ATX ASUS Prime series motherboards are expertly engineered to unleash the fu... morell potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready. offering the power and connectivity needed for demanding AI applications.ASUS Corporate Stable ModelASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software.ASUS Control Center ExpressASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster. simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality. TCO-optimized solution for your business needs.Optimize IT endpoint managementDesigned to assist IT staff in monitoring and controlling devices within their corporate networks. and facilitate inventory checking in multiple locations remotely.Automate IT maintenanceAllows IT staff to schedule automatic updates of the latest BIOS. software and utilities to specific or all devices at off-peak times. enhancing system stability and IT operational flexibility.Securely manage all of endpointsSecurely manage endpoint configuration. portable storage access and PC software applications by enabling them to create grouping rules on individual devices.PerformanceAI SolutionsASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.AI AdvisorASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.7PerformanceDigital Power DesignPRIME B840M-A-CSM features an 8+2+1 phase power design with discrete MOSFETs. ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.5The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom.The Power Saving function contains several settings to easily optimize power consumption and maximize energy savings. You can enable a CPU power limit. darken Aura lighting and set the fan profile to a Power Saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows.The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop. automatically switching frequency and power-efficiency Pcnova.co.uk Delivery: in United Kingdom Report	£139.37 Buy in shop